作业帮I am not busy on Friday.on能替换for吗?
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I am not busy on Friday.on能替换for吗?
I am not busy on Friday.on能替换for吗?
I am not busy on Friday.on能替换for吗?
不能,on可表示具体的某一天或某一天的早上、中午、晚上等,而for是表示一段时间.
时间介词用法：
1、at 强调时间上的某一点,例如：at ten o’clock 十点 at noon=at 12:00 正午十二点 at night 夜晚
2、in 表示某一段时间,指天、年、月、季节、周次等,例如：in Jan.一月 in 2010 2010年 in Spring 春季
3、in the morning 早上 in the afternoon 下午 in the evening 傍晚
4、on 用来特指几月几号,星期几,或是某一天的上下午,例如：on Sunday 星期日 on Monday morning 星期一上午
5、for表示时间段,例如：for two weeks 2周 for a year 一年
不能，介词on是表示在某一天，在这个句子中不能换成for
NO I am not busy
I am not busy on Friday.on能替换for吗?
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